91.49% is the change from 517 to 990
Calculation steps:
[( 990 - 517 ) ÷ 517] x 100 = 91.49%
Formula
Percentage change = [(990 - 517) / 517] x 100
Subtract the new number by the original number
990 - 517 = 473
473 ÷ 517 = 0.9148936170212766
0.9148936170212766 x 100 = 91.49%